Reduce new space size when average scavenging time is high

src/heap/mark-compact.cc

Index: src/heap/mark-compact.cc
diff --git a/src/heap/mark-compact.cc b/src/heap/mark-compact.cc
index 53bd132ac0be4da9bc3241c4800e9ccc65dcd3d6..c85f10f22266bbf45f179f8d7b10fec883291612 100644
--- a/src/heap/mark-compact.cc
+++ b/src/heap/mark-compact.cc
@@ -677,9 +677,7 @@ void MarkCompactCollector::CollectEvacuationCandidates(PagedSpace* space) {
   int total_live_bytes = 0;
 
   bool reduce_memory =
-      reduce_memory_footprint_ ||
-      heap()->HasLowAllocationRate(
-          heap()->tracer()->CurrentAllocationThroughputInBytesPerMillisecond());
+      reduce_memory_footprint_ || heap()->HasLowAllocationRate();
   if (FLAG_manual_evacuation_candidates_selection) {
     for (size_t i = 0; i < pages.size(); i++) {
       Page* p = pages[i].second;